Hair roller



FIG. 1 is a perspective view from above to the rear and left side of the hair roller embodying our new design;

FIG. 2 is a perspective view from above to the front and the left side thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof, the left side elevational view being a mirror image thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in FIGS. 5 and 7 illustrate portions of the hair roller and form no part of the claimed design. 

CLAIM The ornamental design for a hair roller, as shown and described. 